Informal discussion groups, "rap groups", have been found to be an effective method for establishing rapport and understanding with mentally retarded adults in sheltered workshop settings. To investigate the use of rap groups as a field research approach with mentally retarded adults, four groups of 6 to 9 mentally retarded adults, divided by functioning level and age, met for 15 weeks with a group facilitator whose role involved listening, moderate structuring, modeling of participation, and minimal shaping of responses. Group procedures varied amongst three facilitation levels: baseline (as stated above); treatment one which encouraged the expression of feelings; and treatment two which used questions to stimulate reflection on issues. Group sessions were audiotaped and transcribed for content. An analysis of the results showed that, as in previous research, the "rap groups" were effective in establishing rapport and trust with the agency and its clientele. The groups did not require a high degree of structuring and modeling, and with minimal shaping and moderate facilitation the participants were able to reach a meaningful depth of discussion, thus proving the effectiveness and appropriateness of this method for field research. A review of content showed that the predominant themes were romantic relationships, independence, self-worth, loneliness, support, and behavior control. (Procedural guidelines and examples of participants' comments are appended). (BL)